Seat-hinge.



A. S. KINNER & M. H. PAlNE.

SEAT HINGE.

APPLICATION FILED MAY 15. 1914.

Patnted Mar. 21,1916.

2 SHEETS-SHEET I.

47 Inventor; 475671, 5. Kinncr. Naz uau) H Paine.

THE COLUMBIA PLANOGRAPH .co.. WASHINGTON, n. c.

A. S. KINNER & M. H. PAINE.

SEAT HINGE.

APPLICATION FILED MAY15 |914A 1., 176,296. Patented Mar. 21, 1916. 2 SHEETSSHEET 2- 32 77116722 27715. liberal Skinner. fizzf/zew H Paine.

,A LBEBT S. KINNER AND MATHEW H. PAINE, OF GLENELLYN, ILLINOIS, ASSIGNORS TO HEY WOOD BROTHERS AND WAKEFIELD COMPANY, OF'GABDNER, MASSACHUSETTS,

,A. CORPORATION OF NEW JERSEY.

SEAT-HINGE.

Specification of Letters Patent.

Patented Mar. 21, 191

3 Original application filed April 12, 1910, Serial No. 554,915. Patent No. 1,148,905, patented August 3, 1915.

. Divided and this application filed May 15, 1914. .Serial No. 838,856.

To. all whom it may concern:

-Be it knownthat we, ALBERT S. KINNER andMATI-mw H. PAINE,':b OlZl1 citizens of the United States, residing at'Glenellyn, in the county of Dupage and State of Illinois, have invented a new'and useful Improvement in Seat llinges, of which the following,

together with the accompanying drawings,

is-a specification.

(Our invention relates to improvements in seat hinges for folding chairs; and similar articles having a hinged seat, and the object ,of our invention is to provide improved means for, the support and operation of the hinged; seat.

, This; application is a division 1 of applica- 121011- S81-l21l;N O. .554,915,filQClbY us April 12, 1910, for a folding 'chair. 'Te attain this object by; the mechanism illustrated in the accempanying drawing, in whichj F-i-gurel represents inperspective view a (chair; embodying our invention. Fig. 2 is a side view of one- 0f therocking seat supporting arms. Fig. 3 is abottom view of the same. Fig. dis a sectional View; of the frictional; connection between the rocking seat supportingarmend; the framework of the chair. Fig. .5 isadetached perspectiveview -of ;;t l 1e;;bracket; to which-one of the seat supportingarmsiisattached. *Fig. 6 is-a detached perspective view of the f friction clamp} for holding the seat supporting arm.

Fig. .;7 is. a detached perspective viewof; the seat;supportingarm. ;;Fig.-;8 is a top view of one;of the chair feet the chair leg being sh w se iona i so he P 11 oft broken ;l;ine .-;8.8, Fig. Y 1. Fig. 9 is a rear ,view;of,,a portion ofthe back frame. Fig 1.0 is a1 top view ofthe same shown in section pn the plane ofthe broken line 10+ 10, Fig. ,9. Fig; 11 represents: the T-shaped strip .whichgis bent to form oneside of thechair frame. Fig. 12 represents the T-shaped strip; in; the form. in which it is delivered from the rollingmill. Fig. 18 is aside view ,ofour improved chair. Fig.14 is'a plan view; shown in section. on the-plane -of the :broken line 141-14, Fig. 13. Fig. 15 is adetached perspective viewjofpne of the sheet .metal brackets for supporting one end of the jfoot'rail. Fig, 16 representsa portion of the chair leg showing the-recessed sides to rece re het tra gbrac e i 17: i e ie of a portion of the frame with a bracket for holding the foot rail attached thereto. Fig. 18 is a plan view of one of the foot rail brackets attached to the chair leg, which is shown in transverse sectional view. Fig. 19 is a detached view of a portion of the framework shown partly in section and illustrating the. construction of the chair frame. Fig. 20 is a transverse sectional view through the chair back on the plane of the broken line 20-20, Fig. 1. Fig. 21 representsa portion of one of the seat supporting arms with a spring applied theretofor lifting the seat. Fig. 22 is a sectional view of the same on the plane of the broken line 22-22. Fig. 21.

Similar referencecharacters refer to similar parts in the different figures.

Referring to the accompanying drawings, 1, 1 denote the two sides of the chair frame, which are substantially identical in construction and are each formed from a single strip of sheet metal rolled in a continuous length and T-sh'aped in cross sectionnthe stemof theT consisting of a longitudinal rib 2. In the construction of. one side of the chair frame, a single strip, shown at 3, Fig. 12,. and provided on one side with the longitudinal rib 2, is cut the proper length for the oompletedchair frame.

Nea'r-the central section of the strip 3 a short section offithe rib.2-:is cut away to form a notch, as shown atfll, Fig. 11, to enupon itself at 5, the edges 7, 7 will come in contact, as shown at 8, Fig. 13, forming recesses in which the edges of a wooden back -9 are inserted, as. shown in sectional view in Fig.- 20. The metal strip is then bent at 10 into a substantially horizontal position to form a support for the arm 11. It is again bent atsubstantially right angles at 12 and extended downward to form the front leg 13, the V-shapednotch 14, Fig. 11, having been formed in the rib 2 to form the miter joint 15. The rear portion of the strip is extended downward, as shown at 16, Fig. 13,

giving the proper inclination to the backof the chair until the plane of the seat is reached. where the strip is bent at 17 and extended vertically downward to form the 7 rear leg 18 of the chair. The front and rear legs 13 and 18 are united by brackets 19 having their ends riveted or bolted to the chair legs. 7

At the point of the bend 10, Fig. 19, be-. tween the back and arm, the longitudinal rib 2 is split, as shown at 20, Fig. 11, so

that the process of'bending the strip will:

which is shown in perspective view' in Fig.

5, are provided with central concave recesses 24, each recess being in the form of a spherical segment. Held against the inner sides of the brackets 19 are rocking seat supporting arms 25, preferably shaped from sheet metal, and each having a spherical V segmental recess 26. adapting the side arm to theinsideof the bracket.

fit the corresponding recess in the bracket 19. The arms 25 are held in'place by means of a friction clamp 27, shown inpe'rspective viewin Fig. 6,'andh'avinga spherical segmental recess 28 httIIIgthG COIIESPOHdHIg recess in the arm 25. a One end of the friction clamp 27 is'provid'ed with a right angled flange 29 having prongs 30. The flange 29 is adapted to'pass through a recess 31 in the lower-edge of the bracket 19, with'the prongs 30. 3O engaging T he'upper end of" the friction clamp 27 is providedwith a bolt'hole' 31 to receive a clamping bolt 32. which passes through the friction clamp and through a'curved slot 33 in the arm25 and [also through the 'bracket 19 to receive a nut forming friction surfaces curved'slot 33in the seat arm 25 limits 'metal seat 34;

34; By means of the bolt'32 the armflis clamped between the face of the br'acket'lf) and the' frictionclarnp"27, the curved sides bfjthe segmental recesses 24, 26 and 28 to resist the rocking motion 'of' the seat arms 25; and the amount offricti'on exerted can be'varied by loosening or tightening the bolt 32. The the rocking movement of the arm; Thetwo seat arms 25 are'united by a 'wooden or sheet The two metal frames forming the sides of the chair'areconnected by the seat and also byth'e'w'ooden' back 9,"the edges 0f which are attached to the clips 35, each of which consists of a single'piece of sheet'metal which is inserted through Inortises 36, 3G in the back of the'frame. Thecrown portion ofthe T-shaped strips is out away on opposite sides to fo m notches; as s'ho'w fi'at 87, 37, Fig. I order the longitudinal rib 2,

to reduce its width and allow the flanged edge 38 of a foot rail supporting bracket 39 to be inserted. Immediately below the notches 37 the crown portion of the frame is tapered, as shown at 40, 40', Fig. '16, to receive the flanged edges 38 and support the bracket 39 in which the foot rail 41 rests. Brackets similar to 39 are similarly attachedtothe rear leg of the chair at 4 in order to support a connecting back rail 43% The lower ends of 'the'chair' Fig. 8, which extend transversely across the bottomof the legand f rm asupport upon which the leg rests. The plates44'are bent upwardly zit/45 against the crown portion legs rest upon plates 44,

of the leg, to which. they areattached by rivets 16.

The flanges 29 of the friction clamps 27 i also serve as stops to limit the downward movementof the seat" by their contact with the shoulders 47*0f the seat arms'25', therehv providing 'a rigidfsupportforthe' seat; The taperedprongs 21, by which the front'and rear 'of'theside" frames arejunited, are inserted in notched openings 48, Fig; '1l,fin thereby supporting the prongs 21 against vertical .movem'e'nt "and relieving the riveted end 22 from strain. 7

To one of the seat supporting arms'w'e apply a springtoraise the arm and'normally holdthe seat in a raised position.

Oneof the clampingplates 27 is provided with an "arm 49 to which oneend of a'spiral spring 50 is attached The opposite end of thespringfiOis attachedjto a bolt 51 held in the arm 25, 'The bolt 51 also serves'to hold in place a cover for the spring 50 T lie'rplate52 has a flange 53 on its lower edgewhich bears against the side of the arm 25 'andispro 'vided "w th a spur "o'r prongbat passing through a small opening in the arm 25. e'claim, f v 1. In a chair, a side frame jprovidingfa surface (having a spherical recess'therein, a sheet metal plate. forming a seat supporting arm, said, plate having a portion deflectedfr'pm the plane of its surface'toform on one slde thereof a spherical projection "fittingthe recess of said frame, and onjthe opposite side a corresponding spherical re-' cess,;and a member detachably interlocked plate 52 whichserves'asa with said. frame and disposed onthe opposite side of said plate therefroim said member having on its inner surface a spherical pro ec t1on fitting surface having a sheet'metal plate, arm, said plate'having a portion deflected spherical recess thereima fromtheplane'of its surfaceto form. on one side thereof a spherical projection fitting the recess offsaidplate. 2 In a cha1r,a s de, frame providing a forminga seat supporting V am recess of said frame, and onthe opposite sidea correspondingspherical recess, a membe? detachably interlb' clted withsaitlfraliiej at one end and disposed on the opposite side of said plate therefrom, said member having on its inner surface a spherical projection fitting the recess of said plate, and means at the other end of said member for varying the friction between the cooperating recesses and projections of said frame, plate and member.

3. In an article of furniture, a member providing a surface having a circular recess therein, a plate forming a seat supporting arm, said plate having a portion deflected from the plane of its surface to form on one side thereof a circular projection fitting the recess of said member, and on the opposite side a corresponding circular recess, and a second member attached to said first member and disposed on the opposite side of said plate therefrom, said second member having on its inner surface a circular projection fitting the recess of said plate, and in axial alinement With the circular recess of the first member, whereby said plate is hinged to said members about the axis of said circular recesses and projections.

Dated this fifth day of May 1914.

ALBERT S. KINNER. MATHEW H. PAINE.

Witnesses:

L. 1. cou on, J. E. CUNNINGHAM, D. J .GRENIER.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

